Re: mac80211 using different tx queue for frames with same TID and RA

On Mon, 2010-08-30 at 16:01 +0200, Helmut Schaa wrote:

while debugging an issue in rt2x00 I've discovered that in some cases frames
with the same TID and RA end up in different tx queues (which causes problems
in rt2x00 when using aggregation).

Is this behavior expected and we need to handle that case in rt2x00 or is it
more likely a bug? At least I thought the select_queue implementation in
mac80211 was meant to always pick the same tx queue for skbs with the same
priority and hence it shouldn't happen that frames with the same TID are
queued into different tx queues.

Indeed, that seems like a bug. I don't see how this can happen though,
since the code _appears_ to not use the sk_tx_queue_mapping when an
ndo_select_queue method is present.

johannes

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